First, could it be possible to specify page dimensions in units like cm, mm, inches, or even selecting some standard page formats like A4, A3 and such? Also with horizontal or vertical orientation?

Second, saving to PDF each page or a range of pages would also be very useful. I know there is saving to bmp but...

From time to time I need to make flyers and sent them as PDFs for printing. This last time I wanted to do it with my Amigas, so Designer came to the rescue. With those two options Designer can be a very useful kinda DTP program also